Signal or calling device.



N O S U G R B F E R SIGNAL OR CAL LING DEVIGE.

APPLICATION FILED JULY 2a, 1902.

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anmntd YILVM wifnmom No. 24mm 4 PATENTED OCT. 27, 1903. R. H. FERGUSON.SIGNAL 0R CALLING DEVICE.

APPLICATION FILED JULY 28, 1902.

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RICHARD H. FERGUSON, OF

ONE-HALF TO GEORGE W.

Patented October 27, 1903.

PHILADELPHIA, P NNsYLvAN1A,AssieNoR or soon, or PHILADELPHIA,PENNSYLVANIA.

SlGNAL OR CALLING DEVICE.

SPECIFICATION forming part of Letters Patent No. 742,619, dated October27, 1903.

Application filed July 28, 1902.

To all whom it may concern.-

Be it known that I, RICHARD H. FERGUSON, a citizen of the United States,residing in the city and county of Philadelphia, State of Pennsylvania,have invented a new and useful Improvement in Signal or Calling Devices,of which the following is a'specification.

My invention consists of an improvement in a signal orcalling devicewherein means are provided for simulating the human voice.

It further consists in novel details of construction, all as will behereinafter set forth.

Figure 1 represents a side elevation of the means employed embodying myinvention and a diagrammatical ,view showing the circuits. Fig. 2represents an end elevation of the device. Fig. 3 represents a plan viewof certain of the parts seen in Fig. 2. Fig. 4 represents a verticalsection of a portion of the device on line 00 as, Fig. 3. Fig. 5represents a perspective view, partly in section, of

certain of the parts seen in Fig. 4t and partly broken away and'on anenlarged scale.

Referring to the drawings,my invention is adapted for use when a signalor call is required, and for purposes of example I have shown anddescribed the same as applied to a telephone.

A designates a cord-circuit for the operator, which is constructed withthe usual battery, magnets, and push-button and also with a contactdevice B, which is normally out of contact with its point 0 and which isoperated by central in order to give the call. Annmber of batteries areshown here differently for convenience; but in a telephone-exchangesystem one battery or at most two would serve for all purposes.

D designates a mouthpiece at the subscribers end, which is provided witha receiver E and a spring-actuated hook F, as usual, said mouthpieceleading therefrom and having'the spring-hook H at one one thereof, whichwhen in one position contacts with the conductor J, which is incommunication with the magnet K and the battery L, which latter hasleading there-.

from the conductor M, the other end of which contacts at certain timeswith the hook N, which has leading therefrom the conductor P, which isin contact with the receiver-hook F.

having a wire or conductor G Serial No. 117.294. (No model.)

Q designates a conductor also leading from the mouthpiece D, beingbroken, as at Q, and

.is connected with the ground, and in circuit with which is the magnetR.

S designates the armature of the magnet, which is provided with a rod T,which is guided in the standard U, which supports the magnet, and alsoin the ear V, which is carried by the box \V or other suitable support,which also carries the standard U.

A designates a bellows having the weight B thereon and having a link 0connected thereto and to the rod T. Said bellows communicates in thepresent instance with the interior of the box W, which is provided withopenings D and E, each of which has situated therein a suitable reed orsounding device D it being noted that the box W is provided with thechambers D and D and that said chamber D is in communicationwith thebellows A by reason of the port D and the chamber D is in communicationwith the bellows F byreason of the port D", so that when either of saidbellows A or Fare closed I the'air within the same is forced throughtheir respective ports D and D into either the chamber D or D from whichthe air escapes through the openings D and strikes the reeds D therebyproducing a sound. The arrows in Fig. 5 indicate the direction in whichthe air travels when forced through the chambers D and D F designates asecond bellows, which in the present instance is situated upon the topof the box V and is provided with the weight G and has a link 11connected therewith and also with the rod T. The magnet K is providedwith an armature J, which in its normal position supports a drop K,which 0 is of the usual construction.

The operation is as follows: When the central or operator receives acall for the subscriber having the mouthpiece D and receiver E, bysuitable insertion of plugs in proper 5 places the circuit is madetherewith and by operating the contact-piece B the current is formedfrom the central or operator through the hook N and the conductor P tothe receiver-hook F,which is in contact with the pormo ergized raisesthe armature S from its position (seen in full lines) and carries withit the rod T, which is likewise raised. This closes the bellows A, whichbeing filled with air causes the same to be forced through the opening Dand causes the reed to be operated, which is so constructed as to givetherewith a sound of a predetermined character. The link II meanwhilehas raised the bellows F, which was closed heretofore, and the same isfilled with air, so that when the circuit is broken again the weight Gforces down the bellows F, which causes the air to be forced through theopening E and operates the reed in the opening E, which gives,therefore, a sound of a predetermined character, it being seen that theweight B has returned the bellows A to its former open position, readyfor the next call and the subscriber that will thus be informed ofthecall, and by removing the receiver E from the hook F will be incircuit and ready to talk. p

It will be evident that various changes may be made by those skilled inthe art, and I do not, therefore, desire to be limited in every instanceto the exact construction herein shown and described.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a signal or calling device, a magnet, means for electricallyenergizing the same, a reciprocal armature 1" or said magnet, asoundprodueing bellows, and a rigid member connected with said armatureand with the bellows and disposed at an angle to the line of movement ofsaid armature and bellows whereby the latter may be operated by thereciprocation of said armature to produce the signal or calling sound ofsaid bellows.

In a signal or calling device, an electric circuit, a magnet therein, areciprocal armature therefor, a plurality of sound-producing bellows,and rigid members pivotally connected withsaid armature and with saidbellows whereby reciprocation of thearmaturc operates said bellows insuccession in oppo site directions upon the energizing of the magnet.

In a signal or calling device for telephones, a circuit, a receivertherein,a magnet in circuit with the central office, a reciprocalarmature for said magnet, a pair of soundprodueing bellows, rigidmembers connected therewith and with said armature, said bellows beingadapted to operate in succession by the central office through theenergizing of the magnet and the movement of said members for actuatinga suitable call or signal.

4. In a signal or calling device for telephone systems, a circuit, amagnet therein, a reciproeatory armature for said magnet, a soundingdevice, bellows disposed upon opposite sides of said sounding device,and an independent connection between said armature and each of thebellows whereby the reciprocation of the armature simultaneouslyactuates said bellows in opposite directions.

5. In a signal or calling device for telephones, acircuit, a receivertherein, a magnet in circuit with said receiver, a sounding device, areciprocatory armature for said magnet guided in a fixed path on saidsounding device, bellows supported upon opposite sides of the soundingdevice and pivotal connections between the armature and each of thebellows whereby the latter are simultaneously moved in oppositedirections as the armature reciprocates.

RICHARD II. FERGUSON.

Witnesses:

JOHN A. WIEDERSHEIM, WM. CANER WIEDERSHEIM.

